Home / 38,664.16-53,356.24-21,000.16

Finding the Fourth Proportional to 38,664.16, 53,356.24 and 21,000.16

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Solution

The fourth proportional to 38,664.16, 53,356.24 and 21,000.16 is: 28,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,664.16 : 53,356.24 = 21,000.16 : x
  2. Step 2: Convert to fraction form
    38,664.16/53,356.24 = 21,000.16/x
  3. Step 3: Cross multiply
    38,664.16x = 53,356.24 × 21,000.16
  4. Step 4: Simplify right side
    38,664.16x = 1,120,489,577.00
  5. Step 5: Solve for x
    x = 1,120,489,577.00/38,664.16
  6. Step 6: Final answer
    x = 28,980.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.